为了满足船舶具有适度的稳性,对具有三层舱的船舶来说,其二层舱约占全部装载货量的()。
A.20%
B.25%
C.45%
D.55%
参考答案:C
看图选择。
1. The book is ________ the desk.[ ]
A. in
B. on
C. under
2. The ruler is ________ the desk.
3. The pencil is ________ the desk.[ ]
4. The chair is ________ the desk.[ ]
属于磺胺增效剂的是
A.盐酸乙胺丁醇B.异烟肼C.酮康唑D.环丙沙星E.甲氧苄啶